320006140531 has 32 divisors (see below), whose sum is σ = 420026572800. Its totient is φ = 236197982880.

The previous prime is 320006140501. The next prime is 320006140549. The reversal of 320006140531 is 135041600023.

It is a cyclic number.

It is not a de Polignac number, because 320006140531 - 2³³ = 311416205939 is a prime.

It is a super-2 number, since 2×320006140531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320006140496 and 320006140505.

It is not an unprimeable number, because it can be changed into a prime (320006140501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15876646 + ... + 15896788.

It is an arithmetic number, because the mean of its divisors is an integer number (13125830400).

Almost surely, 2^320006140531 is an apocalyptic number.

320006140531 is a deficient number, since it is larger than the sum of its proper divisors (100020432269).

320006140531 is a wasteful number, since it uses less digits than its factorization.

320006140531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31039.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 320006140531 its reverse (135041600023), we get a palindrome (455047740554).

The spelling of 320006140531 in words is "three hundred twenty billion, six million, one hundred forty thousand, five hundred thirty-one".